Journal of Yeungnam Medical Science

Original articles

Urology
Risk factors for prostate-specific antigen persistence in pT3aN0 prostate cancer after robot-assisted laparoscopic radical prostatectomy: a retrospective study: Jun Seop Kim, Jae Hoon Chung, Wan Song, Minyong Kang, Hyun Hwan Sung, Hwang Gyun Jeon, Byong Change Jeong, Seong Il Seo, Hyun Moo Lee, Seong Soo Jeon; J Yeungnam Med Sci. 2023;40(4):412-418. Published online June 28, 2023; DOI: https://doi.org/10.12701/jyms.2023.00234

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Background
The aim of this study was to evaluate the risk factors for prostate-specific antigen (PSA) persistence in pathological stage T3aN0 prostate cancer (PCa) after robot-assisted laparoscopic radical prostatectomy (RALP).
Methods
A retrospective study was performed on 326 patients with pT3aN0 PCa who underwent RALP between March 2020 and February 2022. PSA persistence was defined as nadir PSA of >0.1 ng/mL after RALP, and the risk factors for PSA persistence were evaluated using logistic regression analysis.
Results
Among 326 patients, 61 (18.71%) had PSA persistence and 265 (81.29%) had PSA of <0.1 ng/mL after RALP (successful radical prostatectomy [RP] group). In the PSA persistence group, 51 patients (83.61%) received adjuvant treatment. Biochemical recurrence occurred in 27 patients (10.19%) in the successful RP group during the mean follow-up period of 15.22 months. Multivariate analysis showed that the risk factors for PSA persistence were large prostate volume (hazard ratio [HR], 1.017; 95% confidence interval [CI], 1.002–1.036; p=0.046), lymphovascular invasion (LVI) (HR, 2.605; 95% CI, 1.022–6.643; p=0.045), and surgical margin involvement (HR, 2.220; 95% CI, 1.110–4.438; p=0.024).
Conclusion
Adjuvant treatment may be needed for improved prognosis in patients with pT3aN0 PCa after RALP with a large prostate size, LVI, or surgical margin involvement.

Citations

Citations to this article as recorded by

Exosomal non-coding RNAs: orchestrators of intercellular crosstalk in the prostate cancer tumor microenvironment
Huanglin Duan, Baisheng Xu, Peiyue Luo, Tao Chen, Jun Zou
Frontiers in Immunology.2025;[Epub] CrossRef

Urology
Novel cystography parameter to predict early recovery from urinary continence after radical prostatectomy for prostate cancer: a retrospective study: Yeong Uk Kim; J Yeungnam Med Sci. 2023;40(3):252-258. Published online July 21, 2022; DOI: https://doi.org/10.12701/jyms.2022.00311

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Abstract PDF

Background
The purpose of this study was to investigate whether postoperative cystography findings can predict early and long-term recovery from incontinence after radical prostatectomy (RP), compared with the other cystography parameters.
Methods
I retrospectively reviewed 118 patients who underwent robot-assisted RP (RARP) for localized prostate cancer at single institution between January 2016 and April 2021. One hundred and seven patients were included in the study. Postoperative cystography was routinely performed 7 days after surgery. The bladder neck to pubic symphysis ratio, vesicourethral angle, and bladder neck anteroposterior length (BNAP) ratio (the bladder neck-posterior margin distances divided by the anteroposterior lengths) were evaluated. Continence was defined as cessation of pad use. The association between these variables and urinary incontinence was also analyzed.
Results
The urinary incontinence recovery rates 1, 3, 6, and 12 months after RARP were 43.92%, 66.35%, 87.85%, and 97.19%, respectively. Multivariate logistic regression analysis demonstrated that a lower BNAP ratio and wider vesicourethral angle were significantly associated with continence restoration at 1, 3, and 6 months after surgery. In addition, in terms of days of pad usage, lower BNAP ratio, wider vesicourethral angle, and bladder neck preservation were significantly associated with recovery from urinary incontinence within 12 months as assessed by Cox proportional hazard analysis.
Conclusion
This study demonstrated that vesicourethral angle and BNAP ratio were independent predictors of early recovery from post-prostatectomy incontinence. I suggest that both the sagittal and coronal views of postoperative cystography help anticipate early continence restoration after RARP.

Citations

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Prognostic factors for urinary incontinence after robot-assisted radical prostatectomy: a systematic review and meta-analysis
Haoxin Huang, Keke Cai
Journal of Robotic Surgery.2025;[Epub] CrossRef
A single‐center retrospective comparative analysis of urinary continence in robotic prostatectomy with a combination of umbilical ligament preservation and Hood technique
Hiroaki Shimmura, Taro Banno, Kazutaka Nakamura, Anju Murayama, Haruki Shigeta, Toyoaki Sawano, Yukiko Kouchi, Akihiko Ozaki, Fumito Yamabe, Junpei Iizuka, Toshio Takagi
International Journal of Urology.2023; 30(10): 889. CrossRef

Urology
Association between cystographic anastomotic urinary leakage following retropubic radical prostatectomy and early urinary incontinence: Se Yun Kwon; Yeungnam Univ J Med. 2021;38(2):142-147. Published online November 19, 2020; DOI: https://doi.org/10.12701/yujm.2020.00682

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Abstract PDF

Background
This study was performed to investigate the association between cystographic anastomotic urinary leakage (UL) after radical retropubic prostatectomy (RRP) and early urinary incontinence (UI).
Methods
The medical records of 53 patients who had undergone cystography after RRP at our institution between January 2015 and December 2018 were retrospectively analyzed. Cystography was performed 7 to 10 days after surgery. The duration of catheterization depended on the degree of UL, which was classified as mild, moderate, or severe. The study subjects were divided into the non-UL group and the UL group. Continence was defined as the use of no pads. The prostate was dissected in an antegrade fashion, and urethrovesical anastomosis was performed with a continuous suture.
Results
Incontinence rates at 1 and 3 months postoperatively were significantly higher in the UL group than the non-UL group (83.3% vs. 52.2%, p=0.014 and 76.7% vs. 47.8%, p=0.030, respectively); however, those at 6 and 12 months were not significantly different (23.3% vs. 17.4%, p=0.597 and 4.3% vs. 10.0%, p=0.440, respectively). The presence of cystographic anastomotic UL was found to be predictive of UI during the first 3 postoperative months (odds ratio, 3.3; p=0.045). The continence rates during the first 3 postoperative month continence rate showed significant difference with non-UL group regardless of the degree of UL.
Conclusion
The presence of anastomotic UL on cystography was associated with higher rates of UI in the early postoperative period, however the grade of UL was not related to the late recovery of UI. Incontinence rates in patients with or without anastomotic UL immediately after RRP equalized at 6 months.

Citations

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Integrating clinical and image-based parameters for prediction of early post-prostatectomy incontinence recovery: simplified nomogram approach
I-Hung Shao, Sy-Yuan Chen, Hung-Yi Chen, Ting-Wen Sheng, Ying-Hsu Chang, Chung-Yi Liu, Liang-Kang Huang, Hung-Chen Kan, Po-Hung Lin, Kai-Jie Yu, Cheng-Keng Chuang, See-Tong Pang, Chun-Te Wu
BMC Cancer.2024;[Epub] CrossRef
Recognition of Postoperative Cystography Features by Artificial Intelligence to Predict Recovery from Postprostatectomy Urinary Incontinence: A Rapid and Easy Way to Predict Functional Outcome
I-Hung Shao, Hung-Cheng Kan, Hung-Yi Chen, Ying-Hsu Chang, Liang-Kang Huang, Yuan-Cheng Chu, Po-Hung Lin, Kai-Jie Yu, Cheng-Keng Chuang, See-Tong Pang, Chun-Te Wu
Journal of Personalized Medicine.2023; 13(1): 126. CrossRef

Urology
Pelvic floor muscle exercise with biofeedback helps regain urinary continence after robot-assisted radical prostatectomy: Yeong Uk Kim, Dong Gyu Lee, Young Hwii Ko; Yeungnam Univ J Med. 2021;38(1):39-46. Published online June 22, 2020; DOI: https://doi.org/10.12701/yujm.2020.00276

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Abstract PDF

Background
To determine the benefit of pelvic floor muscle exercise with visual biofeedback on promoting patient recovery from incontinence, we investigated variables associated with the early restoration of continence for patients who underwent robot-assisted radical prostatectomy.
Methods
Of the 83 patients enrolled, 41 consecutive patients completed pelvic floor muscle exercise (the exercise group), and the other 42 consecutive patients just before the pelvic floor muscle exercise program commenced (the control group). The primary outcome was whether pelvic floor muscle exercise engagement was associated with zero pad continence restoration within 3 months of surgery.
Results
Continence restoration percentages (defined as zero pads used per day) at 1, 3, and 6 months after surgery were 49.4%, 77.1%, and 94.0%, respectively. The exercise group achieved significantly higher recovery rates at 1 month (p=0.037), 3 months (p<0.001), and 6 months (p=0.023). Cox regression analysis demonstrated that a lower Gleason score (<8; hazard ratio, 2.167), lower prostate specific antigen (<20 ng/dL; hazard ratio, 2.909), and engagement in pelvic floor muscle exercise (hazard ratio, 3.731) were independent predictors of early recovery from postprostatectomy incontinence. Stratification by age showed that those younger than 65 years did not benefit significantly from exercise (log-rank test, p=0.08), but that their elderly counterparts, aged 65–70 years (p=0.007) and >70 years old (p=0.002) benefited significantly.
Conclusion
This study suggests that postoperative engagement in pelvic floor muscle exercise with biofeedback speeds up the recovery of continence in elderly patients (≥65 years old) that undergo robot-assisted radical prostatectomy.

Citations

Citations to this article as recorded by

Urinary incontinence rehabilitation of after radical prostatectomy: a systematic review and network meta-analysis
Kai Yu, Fan Bu, Tengteng Jian, Zejun Liu, Rui Hu, Sunmeng Chen, Ji Lu
Frontiers in Oncology.2024;[Epub] CrossRef
Factors influencing engagement in pelvic floor muscle exercise following radical prostatectomy: A scoping review
Yousef Qan'ir, Lixin Song, Kathleen Knafl, Paschal Sheeran, Hung‐Jui Tan, Mohammed Shahait, Ahmad AL‐Sagarat
International Journal of Urological Nursing.2024;[Epub] CrossRef
Pelvic floor muscle training in men with post-prostatectomy urinary incontinence: a scoping review
Jackelline Evellin Moreira dos Santos, Virginia Visconde Brasil, Cissa Azevedo, Lívia Cristina de Resende Izidoro, Anna Julia Guimarães Batista, André Carlos Santos Ferreira, Luciana Regina Ferreira da Mata
Revista Latino-Americana de Enfermagem.2024;[Epub] CrossRef
Entrenamiento de los músculos del piso pélvico en hombres con incontinencia urinaria post prostatectomía: revisión de alcance
Jackelline Evellin Moreira dos Santos, Virginia Visconde Brasil, Cissa Azevedo, Lívia Cristina de Resende Izidoro, Anna Julia Guimarães Batista, André Carlos Santos Ferreira, Luciana Regina Ferreira da Mata
Revista Latino-Americana de Enfermagem.2024;[Epub] CrossRef
Treinamento dos músculos do assoalho pélvico em homens com incontinência urinária pós-prostatectomia: revisão do escopo
Jackelline Evellin Moreira dos Santos, Virginia Visconde Brasil, Cissa Azevedo, Lívia Cristina de Resende Izidoro, Anna Julia Guimarães Batista, André Carlos Santos Ferreira, Luciana Regina Ferreira da Mata
Revista Latino-Americana de Enfermagem.2024;[Epub] CrossRef
Single Session Pre-Operative Pelvic Floor Muscle Training with Biofeedback on Urinary Incontinence and Quality of Life after Radical Prostatectomy
Mohammad-Hatef Khorrami, Amir Mohseni, Farshad Gholipour, Farshid Alizadeh, Mahtab Zargham, Mohammad-Hossein Izadpanahi, Mehrdad Mohammadi Sichani, Farbod Khorrami
Urological Science.2023; 34(1): 23. CrossRef
Effect of Kegel exercises on the prevention of urinary and fecal incontinence in patients with prostate cancer undergoing radiotherapy
A.E. Urvaylıoğlu, S. Kutlutürkan, D. Kılıç
European Journal of Oncology Nursing.2021; 51: 101913. CrossRef

Original Article

Urology
Oncological and functional outcomes following robot-assisted laparoscopic radical prostatectomy at a single institution: a minimum 5-year follow-up: Jun-Koo Kang, Jae-Wook Chung, So Young Chun, Yun-Sok Ha, Seock Hwan Choi, Jun Nyung Lee, Bum Soo Kim, Ghil Suk Yoon, Hyun Tae Kim, Tae-Hwan Kim, Tae Gyun Kwon; Yeungnam Univ J Med. 2018;35(2):171-178. Published online December 31, 2018; DOI: https://doi.org/10.12701/yujm.2018.35.2.171

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Abstract PDF

Background
To evaluate mid-term oncological and functional outcomes in patients with prostate cancer treated by robot-assisted laparoscopic radical prostatectomy (RALP) at our institution.
Methods
We retrospectively reviewed the medical records of 128 patients with prostate cancer who underwent RALP at our institution between February 2008 and April 2010. All patients enrolled in this study were followed up for at least 5 years. We analyzed biochemical recurrence (BCR)-free survival using a Kaplan-Meier survival curve analysis and predictive factors for BCR using multivariate Cox regression analysis. Continence recovery rate, defined as no use of urinary pads, was also evaluated.
Results
Based on the D’Amico risk classification, there were 30 low-risk patients (23.4%), 47 intermediaterisk patients (38.8%), and 51 high-risk patients (39.8%), preoperatively. Based on pathological findings, 50.0% of patients (64/128) showed non-organ confined disease (≥T3a) and 26.6% (34/128) had high grade disease (Gleason score ≥8). During a median follow-up period of 71 months (range, 66-78 months), the frequency of BCR was 33.6% (43/128) and the median BCR-free survival was 65.9 (0.4-88.0) months. Multivariate Cox regression analysis revealed that high grade disease (Gleason score ≥8) was an independent predictor for BCR (hazard ratio=4.180, 95% confidence interval=1.02-17.12, p=0.047). In addition, a majority of patients remained continent following the RALP procedure, without the need for additional intervention for post-prostatectomy incontinence.
Conclusion
Our study demonstrated acceptable outcomes following an initial RALP procedure, despite 50% of the patients investigated demonstrating high-risk features associated with non-organ confined disease.

Citations

Citations to this article as recorded by

Extended pelvic lymphadenectomy does not improve biochemical recurrence in high-risk prostate cancer patients treated with robot-assisted radical prostatectomy: a propensity-matched comparison of two institutions
Sohei Iwagami, Haruka Miyai, Takahito Wakamiya, Shimpei Yamashita, Masaya Nishihata, Isao Hara, Yasuo Kohjimoto
Japanese Journal of Clinical Oncology.2025; 55(9): 1086. CrossRef
Prediction of a positive surgical margin and biochemical recurrence after robot-assisted radical prostatectomy
Ching-Wei Yang, Hsiao-Hsien Wang, Mohamed Fayez Hassouna, Manish Chand, William J. S. Huang, Hsiao-Jen Chung
Scientific Reports.2021;[Epub] CrossRef

Review Article

Urology
Functional recovery after radical prostatectomy for prostate cancer: Young Hwii Ko; Yeungnam Univ J Med. 2018;35(2):141-149. Published online December 31, 2018; DOI: https://doi.org/10.12701/yujm.2018.35.2.141

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Abstract PDF

With the enthusiasm regarding robotic application in radical prostatectomy in accordance with the widespread use of serum prostate-specific antigen as a screening test, the number of surgeries performed for complete removal of the gland is increasing continuously. However, owing to the adjacent anatomical location of the prostate to the nerve and urethral sphincter complex, functional recovery, namely improvement from post-prostatectomy incontinence (PPI) and post-prostatectomy erectile dysfunction, still remains a main problem for patients who are reluctant to undergo surgery and tend to choose alternative ways instead. Since the late 1980s, the introduction of radical prostatectomy by open surgical modalities, the depth of the anatomical understanding of the structure surrounding the prostate is getting tremendous, which leads to the development of new surgical modalities and techniques that are consequently aimed at reducing the incidences of PPI and erectile dysfunction. Briefly, recent data from robotic radical prostatectomy, particularly on PPI, are quite acceptable, but by contrast, the reported potency regain rate still remains <20%, which indicates the need for advanced surgical modification to overcome it. In this review, the authors summarized the recent findings on the anatomy and surgical techniques reported up to now.

Citations

Citations to this article as recorded by

The assessment of erectile dysfunction after radical prostatectomy using pudendal somatosensory evoked potential
Se Yun Kwon, Jin-Mo Park, Appuwawadu Mestri Nipun Lakshitha de Silva
PLOS ONE.2023; 18(11): e0292847. CrossRef
Fidgetin-like 2 negatively regulates axonal growth and can be targeted to promote functional nerve regeneration
Lisa Baker, Moses Tar, Adam H. Kramer, Guillermo A. Villegas, Rabab A. Charafeddine, Olga Vafaeva, Parimala Nacharaju, Joel Friedman, Kelvin P. Davies, David J. Sharp
JCI Insight.2021;[Epub] CrossRef

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